Long-Term Warming Trends in Korea and Contribution of Urbanization: An Updated Assessment
SCIE
SCOPUS
- Title
- Long-Term Warming Trends in Korea and Contribution of Urbanization: An Updated Assessment
- Authors
- MIN, SEUNG KI; BO, JOUNG PARK; KIM, YEON HEE; KIM, MAENG KI; CHOI, YOUNGEUN; BOO, KYUNG ON; SHIN, SUNGBO
- Date Issued
- 2017-10
- Publisher
- AMER GEOPHYSICAL UNION
- Abstract
- This study conducted an updated analysis of the long-term temperature trends over South
Korea and reassessed the contribution of the urbanization effect to the local warming trends. Linear trends
were analyzed for three different periods over South Korea in order to consider possible inhomogeneity
due to changes in the number of available stations: recent 103 years (1912–2014), 61 years (1954–2014), and
42 years (1973–2014). The local temperature has increased by 1.90°C, 1.35°C, and 0.99°C during the three
periods, respectively, which are found 1.4–2.6 times larger than the global land mean trends. The countries
located in the northern middle and high latitudes exhibit similar warming trends (about 1.5 times stronger
than the global mean), suggesting a weak influence of urbanization on the local warming over South Korea.
Urbanization contribution is assessed using two methods. First, results from “city minus rural” methods
showed that 30–45% of the local warming trends during recent four decades are likely due to the
urbanization effect, depending on station classification methods and analysis periods. Results from an
“observation minus reanalysis” method using the Twentieth Century Reanalysis (20CR) data sets (v2 and v2c)
indicated about 25–30% contribution of the urbanization effect to the local warming trend during the recent
six decades. However, the urbanization contribution was estimated as low as 3–11% when considering the
century-long period. Our results confirm large uncertainties in the estimation of urbanization contribution
when using shorter-term periods and suggest that the urbanization contribution to the century-long
warming trends could be much lower.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/38991
- DOI
- 10.1002/2017JD027167
- ISSN
- 2169-897X
- Article Type
- Article
- Citation
- JOURNAL OF GEOPHYSICAL RESEARCH, vol. 122, no. 20, page. 10637 - 10654, 2017-10
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